From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Rodrigo Rosenfeld Rosas <lbocseg@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] PCI Framegrabber real-time driver
Date: Wed, 11 Jan 2006 23:23:35 +0100 [thread overview]
Message-ID: <17349.34151.559777.835174@domain.hid> (raw)
In-Reply-To: <200601111921.05544.lbocseg@domain.hid>
Rodrigo Rosenfeld Rosas wrote:
> The memory is obtained passing the kernel the parameter "mem=510M". So, the
> kernel won't use the last 2 Mb. I know it is not an elegant solution but it's
> pretty simple and I can't imagine another one...
Another one, suggested in "Linux devices drivers", chapter 8, is to
allocate your memory at boot time with one of the alloc_bootmem
functions. Of course, in order to call these functions, a small part of
your driver need to run in the kernel itself.
For more details, see:
http://lwn.net/Kernel/LDD3/
--
Gilles Chanteperdrix.
next prev parent reply other threads:[~2006-01-11 22:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-11 18:55 [Xenomai-help] PCI Framegrabber real-time driver Rodrigo Rosenfeld Rosas
2006-01-11 19:48 ` Jan Kiszka
2006-01-11 21:21 ` Rodrigo Rosenfeld Rosas
2006-01-11 22:23 ` Gilles Chanteperdrix [this message]
2006-01-12 19:47 ` Rodrigo Rosenfeld Rosas
2006-01-11 22:31 ` Jan Kiszka
[not found] ` <1137032878.43c5beae139f5@domain.hid>
2006-01-12 9:29 ` Jan Kiszka
2006-01-13 14:24 ` Rodrigo Rosenfeld Rosas
2006-01-13 19:57 ` Jan Kiszka
2006-01-13 21:53 ` Rodrigo Rosenfeld Rosas
2006-01-13 22:29 ` Jan Kiszka
2006-01-17 14:33 ` Rodrigo Rosenfeld Rosas
-- strict thread matches above, loose matches on Subject: below --
2006-01-13 15:11 Rodrigo Rosenfeld Rosas
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